发明名称 |
Interstitial ballast vibrator |
摘要 |
An attachment for railroad track maintenance equipment utilizes a parallelogram linkage to position a vibrating skid on the surface of the interstitial ballast intermediate railroad crossties to loosen such ballast for subsequent removal by an undercutter device which is a part of the track maintenance equipment.
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申请公布号 |
US4890557(A) |
申请公布日期 |
1990.01.02 |
申请号 |
US19890296670 |
申请日期 |
1989.01.13 |
申请人 |
KERSHAW MANUFACTURING COMPANY, INC. |
发明人 |
WHITAKER, JR., JOHN B. |
分类号 |
E01B27/11 |
主分类号 |
E01B27/11 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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